time = money priceline and companies like it sell convenience therefore priceline and companies like it sell you your time back. Specifically, they are sellin

time = money priceline and companies like it sell convenience therefore priceline and companies like it sell you your time back. Specifically, they are selling back the time to people who derive greater value from doing something other than trying to book tickets cheaply. Middlemen sell you time you'd spend searching in a search space they specialize in. Q.E.D.